A sustainable and green method is presented in this paper to produce highly oxidized carbon black using dry ball milling. The mechanical energy by colliding milling balls is able to easily break and build chemical …
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In this work, a simple, low-cost and energy-saving ball milling method is developed for the synthesis of material that CuS anchored on reduced graphene oxide. During the milling process, the formation of CuS and the reduction of GO occurred simultaneously, which ensured the dispersion of CuS on rGO and obtained CuS@rGO.
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The samples were prepared from commercial available magnesium hydride (sigma-aldrich) and microporous activated carbon (AC) with BET specific surface area of 1174 m 2 g −1 (Calgon Carbon Company). Before being mixed with AC additives, MgH 2 powder was premilled under 5.5 bar H 2 for 2 h in the sealed vial of a high energy SPEX 8000 vibration ball mill with …
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A homogeneous slurry was formed by blending the active material (80%), activated carbon (10%), and PVDF (10%) with a suitable quantity of N-methyl-2-pyrrolidone (NMP). ... After ball milling process the sp 2 carbon network in graphite disrupts creating defects and a significant amount of it gets bonded to the oxygen groups.
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Activated carbon (AC) with a very high specific surface area of >3000 m2 g−1 and a number of course particles (average size: 75 µm) was …
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Furthermore, ammonium hydroxide as the N-containing liquid is for the first time used in the synthesis of N-doped carbon materials via the ball-milling method. The main objective of this paper is to incorporate N-related groups to biochar via balling milling with ammonium hydroxide and evaluate the sorption performance of N-doped biochar to CO ...
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Activated carbon (AC) with a very high specific surface area of >3000 m2 g−1 and a number of course particles (average size: 75 µm) was pulverized by means of planetary ball milling under ...
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In addition, it was adjusted to 2.5, 5.0, 10.0, and 20.0 wt% to optimize the carbon content according to each ball milling method. As a result, the ball-milling method and carbon content functioned as factors that significantly influenced the performance of the thermal cell cathode material, FeF 3 /AB. In particular, (L) displayed a remarkable ...
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Recently, a ball-milling method has been devised to eco-friendly produce N-doped carbon materials (e.g., graphene) [19], [20], [21]. Ball milling uses the kinetic energy of moving balls to break chemical bonding and produce new surfaces by fracturing feedstock particles [22], [23]. To the best of the authors' knowledge, none of the previous ...
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The milling process gave rise to activated carbon with higher iodine number and methylene blue adsorption compared to non-milling activated carbon. The ball milling process also decreased …
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This study investigates the short time ball milling effect on surface properties of activated carbon. (AC) produced from mangosteen peels (MP) waste and its subsequent …
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Abstract: Designing Fe-carbon catalyst with multiple active sites for persulfate (PS) activation to water purification is challenging. Herein, nitrogen-doped biochar (NBC) loaded with ferrous sulfide (FeS) was synthesized via two-step ball milling. In FeS@NBC BM /PS system, both electron transfer process and reactive oxygen species (ROSs) including SO 4 ⋅ −, O ⋅ H, …
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With the extension of ball milling time, the AN removal rate showed an upward trend. When the ball milling time was 50 min, the AN removal rate reached higher than 80%, and the residual TPH content decreased significantly. Prolonging ball milling time could break PROS more completely and expose more active sites.
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We propose a sustainable route to produce nanoporous carbon materials with a high−surface area from commercial graphite using a dry ball−milling procedure through a …
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We report the design and fabrication of Co, N-doped carbon nanocages by the ball milling-hard template method. This synthesis method consists of two key points. First, potassium chloride (KCl) with a cubic crystal structure is used as the hard template. Second, ball milling is an effective method to uniformly cover the precursor on the surface ...
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In a typical process, 0.520 g of C 6 H 12 N 4, 1.0–7.0 g of FeCl 3 ·6H 2 O and 5 mL of acetone were firstly mixed by ball-milling for 1 h at 320 rpm. The obtained mixture was then dried at room temperature for 1 h and dried at 60 °C for 3 h to form the precursors, which were denoted as Ps-x, where x represents the amount of FeCl 3 ·6H 2 O. Afterward, Ps-x were …
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The ball milling method allows the incorporation of large amounts of N-groups onto the surface of carbon nanotubes, namely pyridine-like N atoms (N-6), pyrrole-like N atoms (N-5) and quaternary nitrogen (N-Q), resulting in highly active catalysts for the oxidation of …
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Activated carbon (AC) with a very high specific surface area of >3000 m2 g−1 and a number of course particles (average size: 75 µm) was pulverized by means of planetary ball milling under ...
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Compared with traditional wet processing, mechanical milling method requires much shorter time and avoids the use of toxic reagents and complicated procedures. ball milling also shows an excellent ability for simple, green, one-pot mechanosynthesis of carbon materials with active sites such as heteroatoms and metal elements.
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Ball milling significantly stimulated the activity of endogenous components in carbon sands and exposed metal oxides, OFGs and structural defects on the surface of the material. The MnO 2-assisted ball milling further increased the above active sites and enhanced the catalytic activity of MnBMCS. This work proposes a simple and environmentally ...
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Although it provides more active sites, it also causes the lithium ions embedded in the anode are unable to be removed and also low conductivity, further resulting in the cycle performance and rate performance are poor. ... In summary, ferrous oxalate was used to reduce the oxidized spend carbon cathode by ball milling-roasting method.
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After the ball milling, the viscous mixture was dried in an oven at 120 °C for 12 h, and then heated to 280 °C for 20 h at a heating rate of 2 °C/min in air to obtain a ball-milling precursor. The precursor was heated to 500 °C at a heating rate of 3 °C/min in an 5 % H 2 /Ar atmosphere and kept for 10 h to obtain Na 4 Fe 3 (PO 4) 2 P 2 O 7 ...
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Ball milling is considered as a scalable solvent-free technique for introducing S atom into a carbon matrix, owing to its low energy input [1], [16], [17]. During the ball milling process, cleavage of C–C bonds and formation of C–S bonds can be easily achieved via energy transfer from the fast-moving balls to the mixture system.
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We adopted a simple processing method, ball milling, to produce ball milled AC (BAC) to improve the physical and electrochemical properties of the original AC and …
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Ball-milling treatment for 150 min produced activated carbon of 449 nm in size and a particle distribution index (PDI) score of 0.66. Ball milled activated carbon from the experiment had a pore ...
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The findings confirm that the combination of the ball-milling mixing and the use of PVP carbon precursor enables the optimal Si@C-2 composite to have a N-doped carbon embedding structure and a robust interface Si-O-C chemical bond bonding, hence obtaining enhanced conductivity, high electrochemical kinetics and superb structure stability during ...
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A common strategy to enhance electronic conductivity is to employ various routes for carbon coating of the particles of the active material as it can provide facile electron migration through the material to the current collector. ... It is evident that both particle size reduction through ball milling and carbon coating through carbonization ...
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The spherical and hydrophilic carbon dots were prepared by high-energy ball milling of active carbon and potassium carbonate. The carbon dots prepared are disperse and fine with an average size of 3.5 nm and a size distribution of 1.6–6.0 nm. They exhibit a nearly excitation-independent and high photostable blue photoluminescence behavior ...
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Ball-milling transforms the highly porous and disordered lattice of activated carbon to graphitic structure simultaneously introduce bulk-phase oxygen due to the carbon atom …
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Designing Fe-carbon catalyst with multiple active sites for persulfate (PS) activation to water purification is challenging. Herein, nitrogen-doped biochar (NBC) loaded with ferrous sulfide (FeS) was synthesized via two-step ball milling. ... effective and low-price characteristics [30]. Ball milling mainly utilizes external mechanical force to ...
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